A software model simulating the learning process of planar ballistic movements of the arm was developed, using the following scheme: an artificial neural network (model-ling the neural system), a pulse generator (a computational block driving the biomechanical model of the arm), a two degrees of freedom manipulator guided by a six-muscles model. The learning scheme was implemented in an unsupervised way, thus not back-propagating the error information on the arm final position with respect to the expected target, but asso-ciating movements between two space positions (network inputs) to muscular activations (network outputs). After a training consisting of about 45.000 simulated movements, the model reached a mean distance error consistent with the experimental data found in typical ballistic movements.
Conforto, S., Schmid, M., Gallo, G., D'Alessio, T., Accornero, N., Capozza, M. (2004). A neural-based model for the control of the arm during planar ballistic movements. In Biomechanics and Sport (pp. 59-65). NEW YORK : Springer-Verlag [10.1007/978-3-7091-2760-5_8].
A neural-based model for the control of the arm during planar ballistic movements
CONFORTO, SILVIA;SCHMID, Maurizio;
2004-01-01
Abstract
A software model simulating the learning process of planar ballistic movements of the arm was developed, using the following scheme: an artificial neural network (model-ling the neural system), a pulse generator (a computational block driving the biomechanical model of the arm), a two degrees of freedom manipulator guided by a six-muscles model. The learning scheme was implemented in an unsupervised way, thus not back-propagating the error information on the arm final position with respect to the expected target, but asso-ciating movements between two space positions (network inputs) to muscular activations (network outputs). After a training consisting of about 45.000 simulated movements, the model reached a mean distance error consistent with the experimental data found in typical ballistic movements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
